The next evolution in wireless networking holds promises of self-driving cars and movies that download in the blink of an eye. 5G is big at this year's Mobile World Congress, but don't expect it until 2020.

The Android Wear-powered Huawei Watch, due mid-2015, is designed to give smartwatches a more classical look. Also new: the TalkBand B2 and N1 Bluetooth fitness trackers and bigger brand ambitions for the Chinese company.

Google has taken its first step to flag ordinary sites like Wikipedia and CNN with a security warning because they are unencrypted, allowing all data transmissions to be viewed by the prying eyes of hackers or governments.